Home / 740,261-1,021,560.72-400,729.52

Finding the Fourth Proportional to 740,261, 1,021,560.72 and 400,729.52

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Solution

The fourth proportional to 740,261, 1,021,560.72 and 400,729.52 is: 553,007.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,261 : 1,021,560.72 = 400,729.52 : x
  2. Step 2: Convert to fraction form
    740,261/1,021,560.72 = 400,729.52/x
  3. Step 3: Cross multiply
    740,261x = 1,021,560.72 × 400,729.52
  4. Step 4: Simplify right side
    740,261x = 409,369,536,976.45
  5. Step 5: Solve for x
    x = 409,369,536,976.45/740,261
  6. Step 6: Final answer
    x = 553,007.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.